It is comprised of a high resolution Mixed-signal Front-End and of a dense Power and energy Computation Engine to achieve at the system-level a class accuracy as high as 0.1% (class accuracy of the product is 0.05%) over a range up to 1/10,000.

Technical article: Complete power metering silicon IP solution: How to specify and integrate successfully a measurement analog front-end including its power computation engine in an energy metering IC

• Embedded Computation Engine for utility biling applications
• Low noise Programmable Gain Amplifier (PGA), to reach the best class accuracy with each type of sensors
• Embedded power management for the best resilience to power supply noise

• Energy Metering

• Exceeds IEC 62053-22 Classes 0.2s
• Active energy accuracy: < 0.05% error over 1/5000 range
• Reactive energy accuracy: < 0.1% error over 1/3000 range
• Supports CT & Shunt resistors
• Chopper stabilized & low noise programmable amplifier
• Low noise and low drift voltage reference: 25 ppm/°C, Chopper stabilized
• 3 independent 24b ∑Δ ADC
• Charge pump to improve linearity for large negative input signals
• Flexible supply voltage: 5V ± 10% with Low noise LDO, 3.3V ± 10% with LDO bypassed
• Offset/gain/phase calibration
• Silicon proven: Measurement report available
• Junction Temperature: -40 to 100°C
• Pin to pin compatibility